Gas valve



June 28, A' LENKTIS GAS VALVE Filed Jan. v30, 1931 11111111 E AIliff/APatented June 28, 1932 .y ADOLPH LENxTis, on Bnooxiiyn, NEW Yom;

` "ens varare n Application led January 30, 1931.` Serial No'.r512,243.

rIhis invention relates to gas valves, and

has for its object the provision of a safety gas valve applicable toconnections between a rubber tubing and a metallic pipe line, or alrubber tubing and a gas appliance, such as a gas stove or gas heater.

It is a common occurrence that rubber tubing connections which formkpart of a gas line become separated accidentally from the correspondingmetallic pipe line. Unfortunately, often the damage is not promptlynoticed, with the consequence that the room or rooms Where theseconnections are installed become filled with gas, with conselquentdanger to human life and property.

The newspapers of the larger cities report almost daily such accidents.

The particular feature of the device covered by this invention is thatwhere this de- .vice is used, the low of the gas is auto-- maticallyarrested immediately after the connection between a metallic pipe lineand a flexible tubing or a flexible tubing and a gas appliance issevered, thereby excluding the possibility of an accident. v

With the above and other objects in view,

this invention consists of the novel features of construction,combination and arrangements of parts, hereinafter fully described,.claimed and illustrated in the accompanying drawing forming part ofthis specification, in which similar characters of reference indicatecorresponding parts in all views, and in which:

35p. Figure 1 is a cross sectional View of a gas fitting provided with asafety check valve, the said gas fitting being installed at the end of apipe line and adapted to receive a I'iexible tubing.

difference that there is a rubber tubing attached to the said fitting.

Figure 3 is a cross sectional View of the end portion of a rubber tubingprovided with a safety check valve, and presents a modification of mydevice, as shown in Figs. 1 and 2. Figure 4 is similar to Figure 3 andalso a modification of Figs. 1 and 2, as it shows a gas applianceattached to the aforementioned tubing. v

'i Figure 2 is the same as Figure 1, with the With reference to theforegoing 'drawing the operationof the device will 'be understood fromthe `following description: Y Y

.On Figures 1 and 2 11 is a gas fitting.' This fitting is attached tothe end of a pipe (i5 line by means of its threaded end portion 12, itscenter part 13 beingribbed foi-'attaching thereto a rubber.k tubing, 14.There is a valve seat, 15, provided' in the -said fitting, Vand a Acone-shaped check -valve,f. 16, f is pressed 60 against the saidseat bya'vcoil spring, 1,7, the said spring being mounted inra lhousing or lnipple 18, which is slidably mounted in the endportion19 of thesaidfitting 11'. The stem 20, whichyin reality'is a continuation of 65the spring'l? provides the connection be-A tween the spring 17andthefcheck'valve 16. Shoulder 21 providesy a support for the springM17, and from the lconstruction'it -is evident that the spring l'hasatendency'to TU. keep the checkwvalve closed, 'the pressure of the gasinside the piper' ine pressingthe check valve 16 against its seat. y' fHoweven when 'afrubber tubing, 14,'is at-V tached to the said fitting,as illustrated in Figure 2the housing or` nipple 18 will' be pressedtoward the right,4V and held there* against the face 22 of the fitting'11. The consequentscompression'of thefspring 17 will raise tliezcheckvalVe116-oifhits-seat, thereby '80 rpermittingtfree.flow. of the gasfrom the pipe, line into theflexible tubing 14. j I f, however, V theflexiblev tubing 14'becomes` separated-from the fitting 11,thepressureof the spring'l7 will cause the check valve 16 to be seatedon 85 its seat, thereby arresting the flow ofl gas.- f A In' Figures 3and 4, 38 represents the body of my safety device] It is'prov'idedjwitha v valve seatl 40 which'accommodates check valve 37, the v lattervbeing tightly pressed against the seatf40 by spring 36'as shown onFigure The: safety device is shown thrust into the end of a rubbertubing35, and when there is no gas appliance connected tothe said tubing, asshown on Figure'B, the safety de- 5 vice will effectively check the flowof gas.; .Wh-en a nozzle 39 of agas appliance is'connected to the rubbertubing 35, as shown on Figure .4,'the spring 36 will be compressed,

Y thereby lifting the' check valve 37 oflI its seat lo 40. If, however,the rubber tubing is separated from the nozzle of the gas appliance, thecondition shown in Figure 3 will return, and the flow of gas will beimmediatelyarrested.

While I have shown and described the preferred embodiment of myinvention, it isto be understood that many minor modifications may beresorted to within the scope of the invention, and I do not, therefore,desire to be limited to the precise construction illustrated in thedrawing.

Having thus fully described my invention,

what I desire to claim and protect by Letters Patent of the UnitedStates isi l. A safety gas device, comprising in combination a metallicpipe-fitting, two inter'- mediate partitions provided with centralopeningstherein, and being arranged in the said pipe-fitting to formopen rear and front chambers therewith; the rear partition being formedwith a centrally .disposed coneshaped valve seat; a substantiallyT-shaped member, the stem of the said T-shaped` member being providedwith Va somewhat large central bore and the top-portion of the T- shapedmember witha somewhat smaller central opening, thereby forming ashoulder inside the said T-shaped member, a valve, and a valve stem, thelatter having one end integrally connected to the said valve and theother end supported by the shoulder of the said T-shaped member, acoiled spring mounted within the bore of the said .T-shapedl stem, thewing-shaped portions of the Te shaped member being adapted forconnection with a rubber tube and made to effect an engagement of thesaid T-shaped stem and pipe fitting in' a fixed position, when the saidrubber tube is extended over the said gas pipe-itting, thereby allowingVa free flow of gas.

2. A safety gas device, comprising in combination a metallicpipe-fitting, two intermediate partitions, the outer 'one of thesehaving a central opening therein, and the inner one beingV formed with acone-shaped valve seat, the said partitions being arranged in the saidpipe-litting to form an open rear and an open front 4chamber therewith;a substantially T-shaped member adapted to partially slide within thesaid front chamber, the stem of the said T-shaped member being providedwith a somewhat large central bore, and the top-portion of the T-shapedmember with a somewhat smaller central opening, thereby forming a'shoulder inside and near the top of the said T-shaped member, a valve,and a valvestem, the latter having one end integrally connected to thesaid valve and the other end supported by the shoulder of the saidT-shaped member, a coiled spring mounted upon the said valve stem andwithin the bore of the said T-sha'ped stern, the latter being of alength substantialy equal to the New York and State of New York this26th l i dayof December, A. D. 1930.

ADOLPH LENKTIS.

